3.14× 5 2 = 78.5 (square centimeter)

3. 14× 5× 2 = 3 1.4 (square centimeter)

The surface area of each block is:

20+78.5+31.4 =129.9 (square centimeter)

What is the volume of?

The volume of the cone is equal to the volume of the rising water, and the volume of the cone is:

3.14×102×1= 314 (cubic centimeter)

Xiao Qiang's cylindrical volume is:

3.14× (10 ÷ 2) 2× 50 = 3925 (cubic centimeter)

Xiao Ming's cone volume is:

1/3× 3.14× (10 ÷ 2) 2×10 = 785/3 (cubic centimeter)

A cylinder is a cone, and its volume is:

3925÷785/3= 15

Your topic is "Xiao Ming told Xiao Qiang". If your topic is right, Xiao Ming says it is wrong. This cone is only115 of a cylinder.

If the topic is "Xiao Qiang said to Xiao Ming", Xiao Qiang is right. A cylinder is 15 times that of a cone.

An iron block with a height of 15 cm and a water depth of 8 cm, when the iron block is placed vertically, the volume of water with a height of 8 cm is:

8× 8× 8 = 5 12 (cubic centimeter)

At this time, the bottom area of water in the cylinder is the bottom area of the cylinder minus the bottom area of iron, and the bottom area of water is:

3. 14× 10 2-8× 8 = 250 (square centimeter)

So when iron comes out vertically, the height of water level rise is:

5 12 ÷ 250 = 2.048 cm